Daniel McMullen, special agent in charge of the FBI's office in Jackson, Miss., told reporters Sunday that records showed the suspect's cellphone was in Atlanta, Phoenix and Tupelo, Miss., at the time of each incident.

Authorities identified the suspect as Mario Edward Garnett. He was shot and killed by Phoenix police in a bank robbery attempt Saturday.

McMullen said investigators believe Garnett shot and killed Officer Gale Stauffer and wounded another officer after robbing a Tupelo bank on Dec. 23. Garnett also is accused of trying to rob an Atlanta bank earlier that day.

The Secret Service said Garnett was arrested in 2010 after making online threats against the president. He was living in Oklahoma City at the time of the arrest. Authorities would not say how the case was resolved.

Israeli Prime Minister Benjamin Netanyahu warned Tuesday that a proposed agreement between world powers and Iran was "a bad deal" that would not stop Tehran from getting nuclear weapons -- but would rather pave its way to getting lots of them and lea...